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Annotation of GNUtools/debug/gdb/include/wait.h, revision 1.1

1.1     ! root        1: /* Define how to access the int that the wait system call stores.
        !             2:    This has been compatible in all Unix systems since time immemorial,
        !             3:    but various well-meaning people have defined various different
        !             4:    words for the same old bits in the same old int (sometimes claimed
        !             5:    to be a struct).  We just know it's an int and we use these macros
        !             6:    to access the bits.  */
        !             7: 
        !             8: /* The following macros are defined equivalently to their definitions
        !             9:    in POSIX.1.  We fail to define WNOHANG and WUNTRACED, which POSIX.1
        !            10:    <sys/wait.h> defines, since our code does not use waitpid().  We
        !            11:    also fail to declare wait() and waitpid().  */   
        !            12: 
        !            13: #define WIFEXITED(w)   (((w)&0377) == 0)
        !            14: #define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
        !            15: #ifdef IBM6000
        !            16: 
        !            17: /* Unfortunately, the above comment (about being compatible in all Unix 
        !            18:    systems) is not quite correct for AIX, sigh.  And AIX 3.2 can generate
        !            19:    status words like 0x57c (sigtrap received after load), and gdb would
        !            20:    choke on it. */
        !            21: 
        !            22: #define WIFSTOPPED(w)  ((w)&0x40)
        !            23: 
        !            24: #else
        !            25: #define WIFSTOPPED(w)  (((w)&0377) == 0177)
        !            26: #endif
        !            27: 
        !            28: #define WEXITSTATUS(w) ((w) >> 8)      /* same as WRETCODE */
        !            29: #define WTERMSIG(w)    ((w) & 0177)
        !            30: #define WSTOPSIG(w)    ((w) >> 8)
        !            31: 
        !            32: /* These are not defined in POSIX, but are used by our programs.  */
        !            33: 
        !            34: #define WAITTYPE       int
        !            35: 
        !            36: #define WCOREDUMP(w)   (((w)&0200) != 0)
        !            37: #define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
        !            38: #define WSETSTOP(w,sig)           ((w) = (0177 | ((sig) << 8)))

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